linux-kernel - RE: [PATCH v2 1/2] scsi: ufs: core: Remove unnecessary if statement

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Message-ID: <20221014001900epcms2p227bbd97b905dfc284028818e81781f76@epcms2p2>
Date:   Fri, 14 Oct 2022 09:19:00 +0900
From:   Daejun Park <daejun7.park@...sung.com>
To:     Bean Huo <beanhuo@...pp.de>, ALIM AKHTAR <alim.akhtar@...sung.com>,
        "avri.altman@....com" <avri.altman@....com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "beanhuo@...ron.com" <beanhuo@...ron.com>,
        "bvanassche@....org" <bvanassche@....org>,
        "tomas.winkler@...el.com" <tomas.winkler@...el.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        Daejun Park <daejun7.park@...sung.com>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 1/2] scsi: ufs: core: Remove unnecessary if statement

Hi Bean,

> LUs with WB potential support are properly checked in ufshcd_wb_probe()
> before calling ufshcd_read_unit_desc_param(), so remove this unnecessary
> if-checkup in ufs_is_valid_unit_desc_lun() to match its function definition.
> 
> Signed-off-by: Bean Huo <beanhuo@...ron.com>
> ---
>  drivers/ufs/core/ufshcd-priv.h | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
> index f68ca33f6ac7..2457b005101a 100644
> --- a/drivers/ufs/core/ufshcd-priv.h
> +++ b/drivers/ufs/core/ufshcd-priv.h
> @@ -300,9 +300,6 @@ static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info,
>                  pr_err("Max General LU supported by UFS isn't initialized\n");
>                  return false;
>          }
> -        /* WB is available only for the logical unit from 0 to 7 */
> -        if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)

Then, there is no requirement for "param_offset" argument.

Thanks,
Daejun